Re: [Discuss-gnuradio] transmitter receiving its own packet

[M. Ranganathan]

This seems like a common scenario and it seems like it would make sense to push the behaviour as low as possible in the stack. Is there a configuration parameter for the USRP "device driver" that instructs the driver to drop self routed signals?

On Tue, Apr 9, 2013 at 2:50 PM, Marcus D. Leech <address@hidden> wrote:

Thanks Marcus for the explanation. Yes, we take care

of attenuating the signal along the RF-cable.

 

Can you explain bit more

“So the best approach is to simply set a bit in your application for your
  RX chain to simply ignore the RX samples while you're transmitting”.

 

can this be done in the python layer or do I have to touch the c++

layer? I am using ofdm as the physical layer (ofdm.py etc.).

 

Sorry, if all this sounds incoherent; I am still a newbee in this

field.

 

thanks and regards

 

--Anirudh Sahoo

Advanced Network Technology Div.

National Institute of Standards and Technology (NIST)

100 Bureau Drive,

Gaithersburg, MD - 20878

Room – B230, bldg.- 222

Phone- 301-975-4439

Well, assuming you have  TX thread and an RX thread, you can signal to the RX thread, via a shared variable, or some such,
   that TX is currently in progress, and to please ignore any samples for a while, or some such thing.

I'll make the general comment that nobody can be really successful in SDR, if the 'S' part of it is a bit of a mystery to them.
   Real-world signal-processing solutions require things beyond the strictly-mathematical treatments of DSP you find in textbooks.
   In real systems, you need to implement algorithms that aren't strictly-mathematical in nature, and require some non-trivial
   understanding of familiar topics in  CS and computer-programming concepts.

-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org

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M. Ranganathan